LabTestedUSA focuses on peptides and bacteriostatic water (BAC water). We plan identity, purity, content, weight, and endotoxin work around the sample and the decision the result needs to support.
Sample intake opening soon · Scope and turnaround confirmed before acceptance
Pick the question you need answered. Each result uses its own method and says what it can—and cannot—tell you.
The question: Does the evidence fit the peptide named on the vial? Mass spec checks its molecular mass, and separation time gives another comparison.
Lab terms: LC-MS / HPLC-MS and retention time. These support identity; they do not read the full amino-acid chain.The question: Of the peaks this HPLC method detects, how much of the signal is in the main peptide peak instead of other peaks?
Lab terms: HPLC area %. This is not the milligrams of peptide in the vial or a check for everything the method cannot detect.The question: How much of the named peptide is actually in the sample? We choose a measuring method for that peptide and sample.
Lab terms: Content or assay, reported with a stated unit and basis. This differs from the weight of all material in the vial.The question: How much material is there overall? A precise balance weighs the sample when its form allows it.
Lab terms: Analytical balance or net sample weight. Weight alone cannot tell how much of that material is the peptide.The question: Is bacterial endotoxin detectable, and at what level? The sample must work with the chosen test method.
Lab terms: LAL is the endotoxin test; endotoxin units (EU) state the result on an agreed basis. This does not establish sterility or safety for injection.Three questions together: Does the sample match its label, how much of the detected HPLC signal is the main peak, and what endotoxin level is measured?
Only the material types below are considered. Suitability and the exact test plan are reviewed before any shipment.
Identity, HPLC area purity, content, weight, and LAL endotoxin can be selected according to the sample and question.
Blends are evaluated case by case. The test plan states whether the components can be resolved and what can be quantified or reported.
Bacteriostatic water is within our material scope. Requested assays, sample needs, and reporting basis are confirmed before acceptance.
A Certificate of Analysis carries the LabTestedUSA logo and connects a sample and client ID to the methods performed, results, units, and relevant analytical views. Report content follows the agreed scope.
Analytical tools and documented handling support clear, reviewable work.
Chromatographic separation with mass-spectrometric evidence for peptide identity questions.
Method-defined peak profiles and area-percentage reporting.
Material-weight measurements with an explicit basis and units.
Endotoxin measurement when method suitability and sample matrix allow.
Professional reporting means traceable sample IDs, stated methods, suitable controls, results with units, and clear limits. Specific method availability is confirmed for each project.
Fast turnaround is a priority. The actual timing depends on the requested tests, sample form, method suitability, and scheduling; an estimate is confirmed before a sample is accepted.
